145188988 has 12 divisors (see below), whose sum is σ = 290378032. Its totient is φ = 62223840.

The previous prime is 145188971. The next prime is 145188997. The reversal of 145188988 is 889881541.

145188988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

145188988 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592633 + ... + 2592688.

Almost surely, 2^145188988 is an apocalyptic number.

It is an amenable number.

145188988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145188988 is a wasteful number, since it uses less digits than its factorization.

145188988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185332 (or 5185330 counting only the distinct ones).

The product of its digits is 737280, while the sum is 52.

The square root of 145188988 is about 12049.4393230557. The cubic root of 145188988 is about 525.5869330014.

The spelling of 145188988 in words is "one hundred forty-five million, one hundred eighty-eight thousand, nine hundred eighty-eight".